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/*
* Copyright (C) 2012 Jamie Bullock
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*/
/* xtract_window_private.h: declares window generation functions */
#define PI 3.1415926535897931
/** \brief generate a Gaussian window
*
* \param *window a pointer to an array to contain the window data
* \param N the number of elements in the array pointed to by *window
* \param sd the standard deviation of the "distribution" represented by the Gaussian curve. The higher the value of sd, the wider the curve. Generally sd <= 0.5
*
*/
void gauss(double *window, const int N, const double sd);
/** \brief generate a Hamming window
*
* \param *window a pointer to an array to contain the window data
* \param N the number of elements in the array pointed to by *window
*
*/
void hamming(double *window, const int N);
/** \brief generate a Hann window
*
* \param *window a pointer to an array to contain the window data
* \param N the number of elements in the array pointed to by *window
*
*/
void hann(double *window, const int N);
/** \brief generate a Bartlett window
*
* \param *window a pointer to an array to contain the window data
* \param N the number of elements in the array pointed to by *window
*
*/
void bartlett(double *window, const int N);
/** \brief generate a Triangular window
*
* \param *window a pointer to an array to contain the window data
* \param N the number of elements in the array pointed to by *window
*
*/
void triangular(double *window, const int N);
/** \brief generate a Bartlett-Hann window
*
* \param *window a pointer to an array to contain the window data
* \param N the number of elements in the array pointed to by *window
*
*/
void bartlett_hann(double *window, const int N);
/** \brief generate a Blackman window
*
* \param *window a pointer to an array to contain the window data
* \param N the number of elements in the array pointed to by *window
*
*/
void blackman(double *window, const int N);
/** \brief generate a Kaiser window
*
* \param *window a pointer to an array to contain the window data
* \param N the number of elements in the array pointed to by *window
* \param alpha The larger the value of |alpha|, the narrower the window becomes
*
*/
void kaiser(double *window, const int N, const double alpha);
/** \brief generate a Blackman-Harris window
*
* \param *window a pointer to an array to contain the window data
* \param N the number of elements in the array pointed to by *window
*
*/
void blackman_harris(double *window, const int N);
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